Fueto is a free, fully-hosted, API-based, outsourced search engine for your WP blog. Fueto wins because we use social signals to rank search results.

Live search suggestions for all post types. Search everywhere, include almost everything in the search. WooCommerce compatible.

The WP Search plugin replaces WordPress search with a better search that is fully customizable via the dashboard, API, filters and action hooks.

WP Quick Search is lightweight angular js base searching plugins. You can use this plugins for you site for live and extremely fast search.